On Monday, Rocky Hill residents will have a chance to weigh in on plans to build an addition to the community and senior center building.

The $10.5 million addition would be paid for with bonds if the council votes to put the project on November’s referendum and voters approve the project.

In July, representatives from Silver Petrucelli and Associates presented preliminary plans for the senior center. Town officials have long said the current space doesn’t accommodate the needs of the town’s senior population.

Project manager John Ireland said the plan is to build a 9,650-square-foot addition to the back of the town hall and community center complex on Main Street.

Jillian Tara, an interior designer with the firm, said that the new combined senior and community center would include five activity rooms, a game room with space for 64 people and a cafe area with a kitchen for social gatherings.

“We have five new activity rooms which will take the place of the activity rooms you have now,” she said. “This is where the seniors will do their fitness classes and there can even be presentations in there.”

Tara said there would be a room for a nurse to do blood pressure screenings and hearing tests, as well as a large conference room for Human Services, Senior Services and Parks and Recreation.

Tara said some rooms will have motorized walls so that the rooms can be opened for more space based on the demand for certain activities.

The public hearing on the proposal is scheduled for Monday at 5 p.m. in the town council chambers.

Following the public hearing, the council is scheduled to vote on whether to send the project to referendum.